Improvement im grain-separators



HERMANN KUBTH, OF MILWAUKEE, WISCONSIN.V

IMPROVEMENT IN GRAIN'SEPARATORS.

Specification forming part of Letters Patent No. 163,213, dated May 11,1875; application filed April 12, 1875.

To all whom it may concern:

Be it known that I, HERMANN KURTH, of Milwaukee, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImprovements in Oockle-Separators; and I do hereby declare that thefollowing is a full, clear, and exact description thereot', which willenable others skilled in the art to which it pertains to make and usethe same, reference being had to the accompanying drawings, and to theletters ot' reference marked thereon, which form a part of thisspecification.

My invention relates to that class oi' machines which are used toseparate oats, cockle, and other foreign substances from wheat; and thenature of my invention consists in the construction ofthe cockle-screen,and in the devices for vibrating the same, as will be hereinafter moreiully set forth.

In the annexed drawing I have merely shown the screen and devicesimmediately connected therewith, and Figure l is a plan view of myinvention. Fig. 2 is a central vertical section on line x fr, Fig. l.Figs. 3, 4, and 5 are detail views of my invention.

A represents a part of the separator-frame, in which are two rollers, BB', at different height from the bottom. The lower roller B has itsjournal-bearings in boxes on the trame A, and is revolved by beingsuitably connected with some of the operating parts of the separator.The upper roller B' has at one end ajournal, c, which rests in a tubularbox, C, on the frame, in which box is a spring, i), for throwing theroller in the opposite direction. At the other end the roller B' isprovided with a square journal, d, which rests in and projects through acorresponding box,G', on the frame. On this side ofthe frame is held ashaft, D, on the lower end of which is a bevelpinion, c, that mesheswith a bevel cog-Wheel, E, on the journal of the roller B. On the upperend of the shaftD is an eccentric, h, which bears against the end of thesquare journal d. G represents the conveyer-belt, which is an endlessapron made of thick rubber cloth, the outer surface of which is stampedor otherwise formed with longitudinal and transverse grooves made veryclose together, so as to form numerous cavities or depressions therein.This endless apron is passed around the two rollers B B', and revolvesupward by the revolution of the lower roller B.

As the grain is passed through the sieves of the shaker it falls on thisbelt or apron, and the grain proper rolls down the same, while thecockle, dust, 85o., are collected in the cavities on the screen, andcarried upward over the upper roller B', where it falls down, it beingassisted therein by the shaking o't said upper roller, which isaccomplished by the revolution of the eccentric h. This eccentric,operating against the square journal d, moves the roller in onedirection, and the spring b, operating against the other journal, throwsthe roller back, the roller thus obtaining a reciprocating motion. Alongthe edges of the belt Gr are projecting flan ges f f, made in sections,and attached to the screen, to prevent the grain from fallin g ott' atthe sides.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. The revolving endless conveyer-belt G, made of rubber cloth, withlongitudinal and transverse or other grooves made in its outer surface,to form cavities therein, for the purposes herein set forth.

2. `The combination of the rotating roller B, reciprocating rotatingroller B', rubber conveyer-belt screen Gr, gears e E, shaft D, eccentric7L, and spring b, substantially as and for the purposes herein setforth.

In testimony that I claim the foregoing as my own I ax my signature inpresence of two witnesses.

HERMANN KUBTH.

